Quantum channel for the transmission of information

Abstract

Systems and methods are described for a quantum channel for the transmission of information. A method includes: down converting a beam of coherent energy to provide a beam of multi-color entangled photons; converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam; changing a phase of at least a portion of the converged multi-color entangled photon beam to generate a first interferometric multi-color entangled photon beam; combining the first interferometric multi-color entangled photon beam with a second interferometric multi-color entangled photon beam within a single beam splitter; wherein combining includes erasing energy and momentum characteristics from both the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam; splitting the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam within the single beam splitter, wherein splitting yields a first output beam of multi-color entangled photons and a second output beam of multi-color entangled photons; and modulating the first output beam of multi-color entangled photons.

What is claimed is:  
     
       1. A method, comprising: 
       down converting a beam of coherent energy to provide a beam of multi-color entangled photons;  
       converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam;  
       changing a phase of at least a portion of the converged multi-color entangled photon beam to generate a first interferometric multi-color entangled photon beam;  
       combining the first interferometric multi-color entangled photon beam with a second interferometric multi-color entangled photon beam within a single beam splitter; wherein combining includes erasing energy and momentum characteristics from both the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam;  
       splitting the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam within the single beam splitter, wherein splitting yields a first output beam of multi-color entangled photons and a second output beam of multi-color entangled photons; and  
       modulating the first output beam of multi-color entangled photons.  
     
     
       2. The method of  claim 1 , further comprising: 
       splitting the second output beam of multi-color entangled photons into a first component multi-color photon beam and a second component multi-color photon beam.  
     
     
       3. The method of  claim 2 , further comprising: 
       detecting a first characteristic of the first component multi-color photon beam; and  
       detecting a second characteristic of the second component multi-color photon beam.  
     
     
       4. The method of  claim 3 , further comprising: 
       modulating the second output beam of multi-color entangled photons.  
     
     
       5. The method of  claim 4 , further comprising: 
       splitting the first output beam of multi-color entangled photons into a first component multi-color photon beam and a second component multi-color photon beam.  
     
     
       6. The method of  claim 5 , further comprising: 
       detecting a third characteristic of the third component multi-color photon beam; and  
       detecting a fourth characteristic of the fourth component multi-color photon beam.  
     
     
       7. A modulated electromagnetic wavefunction produced by a method, comprising: 
       down converting a beam of coherent energy to provide a beam of multi-color entangled photons;  
       converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam;  
       changing a phase of at least a portion of the converged multi-color entangled photon beam to generate a first interferometric multi-color entangled photon beam;  
       combining the first interferometric multi-color entangled photon beam with a second interferometric multi-color entangled photon beam within a single beam splitter; wherein combining includes erasing energy and momentum characteristics from both the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam;  
       splitting the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam within the single beam splitter, wherein splitting yields a first output beam of multi-color entangled photons and a second output beam of multi-color entangled photons; and  
       modulating the first output beam of multi-color entangled photons.  
     
     
       8. An apparatus, comprising: 
       a multi-refringent device optically coupled to a source of coherent energy, the multi-refringent device providing a beam of multi-color entangled photons;  
       a condenser device optically coupled to the multi-refringent device, the condenser device converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam;  
       a tunable phase adjuster optically coupled to the condenser device, the tunable phase adjuster changing a phase of at least a portion of the converged multi-color entangled photon beam to generate a first interferometric multi-color entangled photon beam;  
       a beam splitter optically coupled to the condenser device, the beam splitter combining the first interferometric multi-color entangled photon beam with a second interferometric multi-color entangled photon beam, erasing energy and momentum characteristics from both the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam, and splitting the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam to yield a first output beam of multi-color entangled photons and a second output beam of multi-color entangled photons; and  
       a modulator optically coupled to the beam splitter and capable of transforming the first output beam of multi-color entangled photons.  
     
     
       9. The apparatus of  claim 8 , further comprising: 
       an optical separator optically coupled to the beam splitter and capable of splitting the second output beam of multi-color entangle photons.  
     
     
       10. The apparatus of  claim 9 , wherein the optical separator includes at least one member selected from the group consisting of a cold mirror and a cold filter. 
     
     
       11. The apparatus of  claim 10 , further comprising: 
       a first optical detector optically coupled to the optical separator;  
       a second optical detector also optically coupled to the first optical separator.  
     
     
       12. The apparatus of  claim 11 , further comprising: 
       a signal processing unit coupled to the first optical detector and the second optical detector; and  
       a computer program, running on the signal processing unit.  
     
     
       13. The apparatus of  claim 8 , further comprising: 
       another modulator optically coupled to the beam splitter and capable of transforming the second output beam of multi-color entangled photons.  
     
     
       14. The apparatus of  claim 13 , further comprising: 
       an optical separator optically coupled to the beam splitter and capable of splitting the first output beam of multi-color entangle photons.  
     
     
       15. The apparatus of  claim 14 , wherein the optical separator includes at least one member selected from the group consisting of a cold mirror and a cold filter. 
     
     
       16. The apparatus of  claim 15 , further comprising: 
       a first optical detector optically coupled to the optical separator;  
       a second optical detector also optically coupled to the optical separator.  
     
     
       17. The apparatus of  claim 16 , further comprising: 
       a signal processing unit coupled to the first optical detector and the second optical detector; and  
       a computer program, running on the signal processing unit.  
     
     
       18. A modulated electromagnetic wavefunction produced by an apparatus, comprising: 
       a multi-refringent device optically coupled to a source of coherent energy, the multi-refringent device providing a beam of multi-color entangled photons;  
       a condenser device optically coupled to the multi-refringent device, the condenser device converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam;  
       a tunable phase adjuster optically coupled to the condenser device, the tunable phase adjuster changing a phase of at least a portion of the converged multi-color entangled photon beam to generate a first interferometric multi-color entangled photon beam;  
       a beam splitter optically coupled to the condenser device, the beam splitter combining the first interferometric multi-color entangled photon beam with a second interferometric multi-color entangled photon beam, erasing energy and momentum characteristics from both the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam, and splitting the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam to yield a first output beam of multi-color entangled photons and a second output beam of multi-color entangled photons; and  
       a modulator optically coupled to the beam splitter and capable of transforming the first output beam of multi-color entangled photons.